Which DLCs, if any, are recommended or required to get the most out of the mod?

I realize this seems like a convoluted or backwards way to go about it, but I've been holding off on getting any of the CK3 DLCs since I didn't really play much of it until now (despite owning all the CK2 and Stellaris content). At first it just felt kinda "meh, CK2 but with less stuff" because I had SO much packed into it before.